In this task, we ask you to rewrite a sentence in simple English without changing its general meaning. Essentially, you want to make the sentence easier to read by using simpler words, utilizing more straightforward sentence structures, and omitting non-essential information etc.

The underlying cause of the ciliopathies may be a dysfunctional molecular mechanism in the primary cilia structures of the cell , organelles which are present in many cellular types throughout the human body .
The underlying cause of the ciliopathies may be defects in the mechanism of cilia in the cell .